When I plug and unplug a power cable to the net in my home for let's say, 50.000 times a day, why doesn't my electricity-meter not count that power for the monthly electricity fee?When I unplug the cable the cable should still have some electricity flowing through it at the moment of unplugging. That electricity disappears very shortly after . But after unplugging it, it doesn't have any electricity anymore. So some electricity is lost right? How does this work?
Basically, the appliance works on the current flowing into it. When you unplug the cable (or hit the OFF switch, same thing) the current stops flowing, then the appliance then stops working. Very simple. .
by electricity I assume you mean electrical energy. power is the rate at which electrical energy is consumed. Power is generated by the flow of electrical current across a potential difference. Let's use an analogy. A cable is like a water pipe. Current is like the flow of water in the pipe. Pressure is like potential difference (voltage). When there is a difference in pressure at the two ends of the pipe, water will flow through the pipe. The flow of water carries energy, because it can be used to spin a paddle wheel (motor), and the friction of the water against the pipe (electrical resistance) generates heat. I think your question is something to the effect of, if I suddenly remove the pressure difference across the pipe, won't there still be energy in the water flowing in the pipe, and isn't that energy wasted? Well, there's a difference between water and electrical current: the electron hardly weighs anything. There's very, very little energy stored in the motion of electrons in a wire. When the wire is disconnected, the electrons come to a stop almost immediately, and the amount of energy wasted is infinitesimal. I hope that sort of answers your question.
